US/UK Baby clothes sizes

[Bird Legs]

I need to to be sure that I get the right sizes for some Baby/Toddler swimming costumes - some seem to be the same size but different marking because American. Can anyone help, PLEASE.

IS 12-18 Months (Baby L) the same as American size 2T (33-36ins - 30-33lbs)

And: 18-24months (XL Baby) the same as American size 3T (36-39ins - 33-336bs)

And: 2/3years the same as American 4T (39-42ins - 36-40lbs)

Hope you can help me pick out the right sizes and get thm in overseas post.

and

[annie0000]

I think that the "T" in american sizes stands for a a half. However, american sizes to tend to be quite small compared to the UK, so you are probably about right - what kind of costumes is it you are buying? In general, i would always suggest getting a size up from usual anyway as costumes aren't any good if they are too small and given that they are stretchy it doesn't seem to matter if the are a little too big, they still stay on.